Insole.



W. G. ABBOTT, Ja.

INsoLg. APPLICATION HLED DEC. 4. |915.

1,263,187. Patented Apr. 16, 1918.v

unina eraan maar ommen.,

SONS CO., OF ROCHESTER, l NEW HAMPSHIRE, A COPARTNERSI-IIP COMPRISING MARION L. SPAULDING, 0F BOSTON, MASSACHUSETTS, ROLAND H. SPAULDING AND HUNTLEY N. SPAULDING, BOTH OF ROCHESTER,

SPAULDING, OF BUFFALO, NEW YORK.

NEW HAMPSHIRE, AND LEON C.

y INsoLE.

To all whom t mag/concern.'

Be itknown that I, WILLIAM G. ABBOTT, Jr., a citizen of the'United States, land a resident of Wilton, in the countyof Hillsboro and State of New Hampshire,*have invented an, Improvement in Insoles, of which the following description, in connection with the accompanying drawings, is a specirepresenting like parts.

This invention relates to an insole for boots and shoes, and is an improvement uponA an insole of eXible, substantially'nonstretchable, chemically-treated ber, whose bers are .bonded together by a partial so1ution of the bers themselves, and such as is, shown and described in U. S. Letters 'Pat-ent No'. 1,135,217 .granted April 13, 1915, to Huntley N. Spaulding; v

Chemically-treated v ber -sheetsare made from a plurality of plies or layersofpaper and are ,rendered pliable by moisture present in the ber.

Chemicallytreated ber employed by me is a product composed in whole or invpart of cotton rags which are treated with suit- .able chemicals'known to the trade to render the same substanially hard, non-stretchable, and non-compressible, and the ber thus treated is then treated with glycerin or' insole pliable is retained within the insole by two layers, which repel external moisture, and one of which acts as a ller and lubricant to the bers of the insole and also` as a binder for the surface coating, 4which latter also forms an .antifriction Wearing surface for the insole.

Specification. of Letters Patent. Patented Apr. 16, 1911.8. Application filed December 4, 1915. i Seria1No. 65,010. l l I Referring to the drawing', a represents an insole for boots and shoes,v which issuch as shown and described in the patent referred to and composed of flexible, substantially non-stretchable chemically treated ber containing moisture in sufficient quantity to impart to the insole the desired pliability, and in which the bers of the insoleare bonded together by a. partial solution of the bers themselves. y

The insole a is provided within it with a layer of linseed or other dryingoil, which is indicated vrby' the light broken lines .0, and is also provided with a surface coating of pyroXylin or other varnish material, @which is indicated by the heavy broken lines b,

Fig. 2.

The layer 0 of oil is preferably baked or subjected to heat to harden it before the pyroxylin coating b is applied.

The interior body ortion d represents the natural condition o the chemically-treated ber insole, such as shown in the patent referred to.

The oil layer c serves as a moisture-repelling layer and further acts as a'ller and lubricant for the bers of the chemicallytreated insole, and serves as a binder for the surface coating of pyroXylin to obtain a superior adhesion of the latter to the insole a, and to lessen the amount of the pyroxylin required, land further to retain the desired leather appearance and eect of` Vstren vh and rmness of the insole a. In

addition, it provides the insole a with a smooth, durable, antifriction wearing surface, which reduces to a minimum friction and heat created by movement of the footk of the wearer of a shoe provided with such insole, consequently reducing to a minimum sweating of the feet and thereby providing the surface coating may be applied by pass- `ving the sheet through a bath of pyroXylin.

It is preferred to use vpyroXylin as the surface layer or coating, but it is -not'desired to limit theinvention in this respect, as other varnish materials, such as cellulose acetate, Celluloid, resins, thickened oils, asphaltum, etc., may be used to advantage.

From the above description it will be seen that insoles ot chemically treated ber, whose fibers are bonded together by `a par- 'tial solution ot'4 the ibersl themselves and has wit-hin it. a medium for rendering the iber pliable, when treated as above described, are superior to those Ina-dejrom untreated chemically-treated fiber, in that they retain their pliabilit'y and firmness for a relatively long time, as the medium which makes the iber pliable is retained within the fiber by two moisture repelling` layers, their strength is increased, theyare rendered posed of chemically-treated fiber of thatv character which has within it a medium for rendering, said ber-pliable, said insole havl ing within its body portion a layer of oil and at its surface a layer of pyroXylin, said layers serving to retain the said medium' within the insole. v

2. An insoleifor boots and shoes composed of chemically treated fiber of that character which has within it a medium for 'rendering 'said fiber pliable, said insole havin Within its body portion a layer of oil an at its surfacean anti-friction Wearing layerl of varnish material united with said layer .of oil, said layers serving to retain the saidl medium within the insole.

.ln testimony whereof, l have signed my name to this specification.

wiLLiaM e.l assoir, JR. 

